CN113675675A

CN113675675A - Rectangular connector

Info

Publication number: CN113675675A
Application number: CN202110990085.2A
Authority: CN
Inventors: 蒋芳芳; 唐继
Original assignee: Sichuan Huafeng Technology Co Ltd
Current assignee: Sichuan Huafeng Technology Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-11-19
Anticipated expiration: 2041-08-26
Also published as: CN113675675B

Abstract

The invention discloses a rectangular connector which comprises a plug and a socket, wherein the plug and the socket are inserted and locked through a locking assembly, the locking assembly comprises a locking piece, the locking piece comprises a plate body, the locking end of the plate body is provided with a locking arm a and a locking arm b, a gap is formed between the locking arm a and the locking arm b, one side, close to the locking arm b, of the locking arm a is provided with an arc a and an arc b, the arc a is positioned on the outer side of the arc b and is smoothly connected with the arc b, one side, close to the locking arm a, of the locking arm b is provided with an arc c, the tail of the gap is provided with a semi-arc, the arc b is connected with one end of the semi-arc, the joint of the arc b and the semi-arc forms a high point A, and the arc c is connected with the other end of the semi-arc. The invention has the beneficial effects that: the locking of the plug and the socket can be realized through the locking assembly, so that the plug and the socket are simple to assemble, the locking piece has a self-locking function, and the locking reliability of the plug and the socket is ensured.

Description

Rectangular connector

Technical Field

The invention relates to the technical field of communication, in particular to a rectangular connector.

Background

The electric connector is widely applied in the fields of modern machinery, electronics and the like, and basically can not be separated from the electric connector in an electric place. Along with the development of modern industry, the connector is required to meet more actual requirements besides ensuring basic connection reliability, and can ensure that the connector is convenient to install, convenient to operate, easy to maintain and the like according to different application places. The connector on the market at present has poor variability after the product is shaped, the structure of the connector can not be selectively used according to application places, and the existing rectangular connector is complex to assemble and unreliable in locking.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a rectangular connector which is convenient to lock and reliable in locking.

The purpose of the invention is realized by the following technical scheme: a rectangular connector comprises a plug and a socket, the plug and the socket are plugged and locked through a locking assembly, the locking assembly comprises a locking part and a connecting part, the left side wall and the right side wall of a head shell of the plug are respectively provided with a rotatable locking part through a rotating pin shaft, the two locking parts are connected through the connecting part, the connecting part is positioned above the head shell, the locking part comprises a plate body, the locking end of the plate body is provided with a locking arm a and a locking arm b, a gap is formed between the locking arm a and the locking arm b, one side, close to the locking arm b, of the locking arm a is provided with an arc a and an arc b, the arc a is positioned on the outer side of the arc b and is smoothly connected with the arc b, one side, close to the locking arm a, of the locking arm b is provided with an arc c, the tail part of the gap is provided with a semicircular arc, the arc b is connected with one end of the semicircular arc, and the joint of the arc b and the semicircular arc forms a high point A, the other end of circular arc c and semicircle is connected, and the entry width in gap is more than or equal to the afterbody width in gap, the string of circular arc b is located the outside in gap, the string of circular arc c is located the gap, all install the check pin on the left side wall and the right side wall of the seat casing of socket, after the check pin enters into the gap, break off locking Assembly with the fingers and thumb, the check pin advances to go into circular arc c, then on moving to the cambered surface of circular arc b along the cambered surface of circular arc b again, then move and cross the arc top of circular arc b along the cambered surface of circular arc b, at last move and cross the high point and enter into the semicircle along the cambered surface of circular arc c again.

Optionally, an elastic assembly is arranged in the middle of the plate body, a riveting hole is further formed in the plate body, the rotary pin shaft penetrates through the riveting hole to be riveted with the head shell, the riveting hole is located between the elastic assembly and the locking arm a, the riveting hole, the elastic assembly and the semi-circular arc are distributed in a triangular mode, and the shortest distance from the riveting hole to the circular arc a is smaller than the shortest distance from the riveting hole to the circular arc b.

Optionally, a limiting column is mounted on the left side wall or/and the right side wall of the head casing, and the limiting column is located at the upper right of the corresponding rotating pin shaft.

Optionally, elastic component includes setting element and elastic arm, logical groove has been seted up at the middle part of plate body, the breach has been seted up on the lateral wall that leads to the groove, the elastic arm is installed just to the breach on the lateral wall that leads to the groove, the end connection of elastic arm has the setting element, the elastic arm inclines towards the back of plate body, and the back of setting element salient plate body, after the front of elastic arm aligns with the front of plate body, the setting element is located logical inslot, concave point an and concave point b have all been seted up on the left side wall of head casing and the right side wall, concave point an and concave point b distribute on the circumference that uses the axis of the rotating pin axle as the centre of a circle, and the distance between concave point an to the spacing post is less than concave point b to the distance between the spacing post, after plug and socket plugging locking, the setting element is located concave point b, after plug and socket separation are not hard up, the setting element is located concave point a.

Optionally, convex hulls are arranged on the left side wall and the right side wall of the head shell, the rotating pin shaft is located on the convex hulls, and the back face of the plate body of the locking piece is attached to the convex hulls.

Optionally, the left side wall and the right side wall of the head housing are both provided with a support column, and the support column is supported against the back of the locking arm a.

Optionally, the plug includes first casing and first mounting panel, installs the contact pin subassembly in the first mounting panel, and left casing and right casing that the first casing includes the symmetry and sets up, and left casing and right casing are connected, and just the first mounting panel is installed between left casing and right casing, and the top of right casing is provided with the afterbody subassembly of solidus.

Optionally, the socket includes a seat mounting panel and a seat casing, installs the jack subassembly in the seat mounting panel, and the seat casing includes casing and lower casing, all installs the check lock nail on going up the lateral wall about the casing, and the seat mounting panel passes through the mounting panel and installs the centre gripping down, and goes up casing and casing down and pass through bolt assembly locking.

Optionally, the upper casing is of a rectangular square frame structure, the bottom of the upper casing is provided with a stepped frame, the lower casing is of a rectangular square frame structure, the bottom of the lower casing is provided with the rectangular frame, the seat mounting plate is of a rectangular structure, the limiting blocks are arranged on the outer edges of the seat mounting plate, the tops of the limiting blocks are provided with L-shaped concave surfaces, the bottoms of the limiting blocks are limiting steps, the seat mounting plate is clamped by the upper mounting plate and the lower mounting plate, the top of the seat mounting plate is located in the upper casing, the L-shaped concave surfaces abut against the bottom of the stepped frame, the rectangular frame is penetrated through the bottom of the seat mounting plate, and the limiting steps abut against the rectangular frame.

Optionally, a guide positioning block is arranged on the left shell or/and the right shell, a projection corresponding to the guide positioning block is arranged on the left side wall and the right side wall of the upper shell, a guide groove matched with the guide positioning block is formed in the projection, and the upper end face of the projection is flush with the upper end face of the upper shell.

The invention has the following advantages: the locking component is connected with the rectangular connector, the locking of the plug and the socket can be realized through the locking component, so that the assembly of the plug and the socket is simple, the locking component has a self-locking function, and the locking reliability of the plug and the socket is ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic view of the structure of the plug

FIG. 3 is an assembly view of the head housing and the head mounting plate

FIG. 4 is an exploded view of the socket

FIG. 5 is a first schematic structural view of the locking member;

FIG. 6 is a second schematic structural view of the locking member;

in the figure, 100-locking component, 200-socket, 300-plug, 101-plate body, 102-locking arm a, 103-locking arm b, 104-arc a, 105-arc b, 106-arc c, 107-semicircle, 108-high point A, 109-through groove, 110-notch, 111-elastic arm, 112-positioning piece, 113-riveting hole, 114-connecting mounting hole, 115-rotating pin shaft, 116-connecting piece, 117-gap, 130-head shell, 131-left shell, 132-right shell, 133-limiting column, 134-tail component, 135-convex hull, 136-supporting column, 137-concave point a, 138-concave point b, 139-head mounting plate, 140-guiding positioning block and 141-limiting plate, 201-upper shell, 202-lower shell, 203-seat mounting plate, 204-locking nail, 205-lug, 206-ladder frame, 207-mounting lug, 208-rectangular frame, 209-rectangular plane, 210-limiting block, 211-L-shaped concave surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in FIG. 1, a rectangular connector comprises a plug 300 and a socket 200, wherein the plug 300 and the socket 200 are plugged and locked through a locking assembly 100.

In this embodiment, as shown in fig. 2 and fig. 3, the plug 300 includes a head housing 130 and a head mounting plate 139, a pin component is installed in the head mounting plate 139, a wire outlet is formed in a wire outlet end of the head housing 130, in this embodiment, the head housing 130 has a top wire outlet and a side wall wire outlet, an operator can select to wire through the top wire outlet or the side wall wire outlet as needed, if the top wire outlet is adopted, the side wall wire outlet is plugged by a sealing plug, the head housing 130 includes a left housing 131 and a right housing 132 that are symmetrically arranged, the left housing 131 is connected with the right housing 132, and the head mounting plate 139 is installed between the left housing 131 and the right housing 132, and the top of the right housing 132 is provided with a tail component 134 for fixing wires, the tail component 134 is an existing structure, and mainly has a wire fixing block and a wire pressing block, and detailed description is omitted.

In this embodiment, as shown in fig. 4, the socket 200 includes a seat mounting plate 203 and a seat housing, a socket assembly is installed in the seat mounting plate 203, the seat housing includes an upper housing 201 and a lower housing 202, locking nails 204 are installed on both left and right side walls of the upper housing 201, the seat mounting plate 203 is clamped by the upper mounting plate and the lower mounting plate, and the upper housing 201 and the lower housing 202 are locked by bolt assemblies, in order to facilitate connection of the upper housing 201 and the lower housing 202, mounting lugs 207 are installed at bottoms of front and rear side walls of the upper housing 201, through holes are opened on the mounting lugs 207, a flash is installed at a top of the lower housing 202, the flash forms a rectangular plane 209, and through holes are also opened at front and rear ends of the flash, and when the upper housing 201, the lower housing 202 and the seat mounting plate 203 are assembled, the flash is locked by bolt assemblies inserted in the through holes.

Optionally, the upper housing 201 is a rectangular square frame structure, the bottom of the upper housing 201 is provided with a step frame 206, the lower housing 202 is a rectangular square frame structure, the bottom of the lower housing 202 is provided with a rectangular square frame 208, the seat mounting plate 203 is a rectangular structure, the outer edge of the seat mounting plate 203 is provided with a limiting block 210, the top of the limiting block 210 is provided with an L-shaped concave surface 211, the bottom of the limiting block 210 is a limiting step, the seat mounting plate 203 is clamped by the upper mounting plate and the lower mounting plate, the top of the seat mounting plate 203 is located in the upper housing 201, the L-shaped concave surface 211 abuts against the bottom of the step frame 206, the bottom of the seat mounting plate 203 penetrates through the rectangular square frame 208, and the limiting step abuts against the rectangular square frame 208

In this embodiment, as shown in fig. 2 and 3, the locking assembly 100 includes a locking member and a connecting member 116, the left and right side walls of the head housing 130 of the plug 300 are both provided with rotatable locking members by a rotating pin 115, and both locking members are connected by the connecting member 116, the connecting member 116 is located above the head housing 130, so that the connecting member 116 is broken, and the rotation of the locking assembly 100 can be realized, further, the locking members on the left and right side walls of the head housing 130 are symmetrical with respect to the connecting member 116, in this embodiment, as shown in fig. 5 and 6, the locking member includes a plate body 101, the locking end of the plate body 101 has a locking arm a102 and a locking arm b103, a gap 117 is provided between the locking arm a102 and the locking b, the side of the locking arm a102 close to the locking arm b103 is provided with an arc a104 and an arc 105, the arc a104 is located outside the arc b105, and the arc a104 and the arc 105 are smoothly connected, an arc c106 is arranged on one side, close to the locking arm a102, of the locking arm b103, a semicircular arc 107 is arranged at the tail of the gap 117, the arc b105 is connected with one end of the semicircular arc 107, a high point A108 is formed at the joint of the arc b105 and the semicircular arc 107, the arc c106 is connected with the other end of the semicircular arc 107, the entrance width of the gap 117 is larger than or equal to the tail width of the gap 117, the chord of the arc b105 is positioned on the outer side of the gap 117, the chord of the arc c106 is positioned in the gap 117, the locking pins 204 are arranged on the left side wall and the right side wall of the seat shell of the socket 200, when the locking pins 204 enter the gap 117, the locking component 100 is pulled, the locking pins 204 firstly enter the arc c106, then move to the arc b105 along the arc surface of the arc b105, then move to the arc top of the arc b105 along the arc 105, and finally move to cross the high point to enter the semicircular arc 107 along the arc surface of the arc c106, that is, when the socket 200 and the plug 300 are locked, an operator firstly inserts the socket 200 and the plug 300 in advance, after the socket 200 and the plug 300 are locked and enter the gap 117, the pre-insertion is not needed, then the connecting member 116 is pulled off, the locking pin 204 enters the area of the arc a104, along with the rotation of the locking assembly 100, the locking pin 204 is pushed by the arc b105, so that the locking pin 204 moves close to the arc b105, and after the locking pin 204 passes over the arc top of the arc b105, the locking pin 204 moves close to the arc a104, finally the locking pin 204 passes over the high point a108 and enters the semi-circular arc 107, due to the existence of the high point a108, the locking member has a self-locking function, when the socket 200 or/and the plug 300 are pulled, the locking pin 204 cannot pass over the high point a108, so that the locking reliability of the socket 200 and the plug 300 is ensured, and when the socket 200 and the plug 300 need to be separated, the locking assembly 100 is pulled off in the reverse direction, at this time, the locking pin 204 is pushed out by the semicircular arc 107 and goes over the high point a108 to enter the gap 117, then the arc b105 pushes against the locking pin 204 with the continuous rotation of the locking piece, so that the socket 200 and the plug 300 are loosened, and finally, the plug 300 and the socket 200 can be separated by slight force of an operator.

In this embodiment, the rotating pin 115 is riveted with the head housing 130, the rotating pin 115 protrudes out of the head housing 130, and the protruding rotating pin 115 is located in the riveting hole 113 corresponding to the locking member, so that the plate body 101 rotates around the rotating pin 115, further, in order to facilitate the locking member to be snapped, the connecting ends of the locking member are connected by the connecting member 116, the connecting member 116 is located outside the head housing 130, the locking members on the left and right side walls of the head housing 130 are symmetrical with respect to the connecting member 116, the connecting mounting hole 114 is formed on the plate body 101, and the connecting member 116 and the locking member are connected by the connecting screw installed in the connecting mounting hole 114, so that when a pulling force or a pushing force is applied to the connecting member 116, the rotation of the locking member can be achieved, further, the distance between the connecting member 116 and the rotating pin 115 is greater than the distance between the locking pin 204 and the rotating pin 115, the locking member plays a lever role in the locking process, so that the socket 200 and the plug 300 can be locked more easily.

In this embodiment, as shown in the drawings, a limiting post 133 is installed on the left side wall or/and the right side wall of the head casing 130, the limiting post 133 is located at the upper right side corresponding to the rotating pin 115, after the plate body 101 contacts the limiting post 133, the plate body 101 cannot continue to rotate and can only rotate in the reverse direction, further, a limiting plate 141 is disposed at the top of the head casing 130, and after the connecting member 116 contacts the limiting plate 141, the plate body 101 cannot continue to rotate and can only rotate in the reverse direction, so that the rotating stroke of the plate body 101 can be limited by the limiting post 133 and the limiting plate 141.

In this embodiment, the left side wall and the right side wall of the head housing 130 are both provided with a concave point a137 and a concave point b138, the concave point a137 and the concave point b138 are distributed on a circumference with the axis of the rotating pin 115 as the center of a circle, and the distance between the concave point a137 and the limiting column 133 is smaller than the distance between the concave point b138 and the limiting column 133, further, the middle of the plate 101 is provided with an elastic component, the plate 101 is further provided with a riveting hole 113, the riveting hole 113 is located between the elastic component and the locking arm a102, the riveting hole 113, the elastic component and the semi-circular arc 107 are distributed in a triangular shape, the shortest distance between the riveting hole 113 and the circular arc a104 is smaller than the shortest distance between the riveting hole 113 and the circular arc b105, the elastic component comprises a positioning piece 112 and an elastic arm 111, the middle of the plate 101 is provided with a through groove 109, the side wall of the through groove 109 is provided with a notch 110, the elastic arm 111 is installed on the side wall of the notch 110 opposite to the through groove 109, the end of the elastic arm 111 is connected with the positioning piece 112, the positioning member 112 is a hemispherical structure, and a hole is opened on the front surface of the positioning member 112, the elastic arm 111 inclines towards the back surface of the plate body 101, and the positioning member 112 protrudes out of the back surface of the plate body 101, when the front surface of the elastic arm 111 is aligned with the front surface of the plate body 101, the positioning member 112 is located in the through groove 109, when the plate body 101 is installed, the elastic arm 111 is in a compressed state, and the positioning member 112 abuts against the side wall of the corresponding head housing 130, in this embodiment, the distance between the concave point a137 and the rotating pin 115 is equal to the distance between the positioning member 112 and the rotating pin 115, and when the positioning member 112 moves to the position of the concave point a137 during the rotation process of the plate body 101, the positioning member 112 will spring into the concave point a137, so as to have a knocking effect on the head housing 130, an operator can know the general position of the locking member through hand feeling and hearing, and similarly, the positioning member 112 can also spring into the concave point b138, in the embodiment, when the positioning element 112 enters the concave point a137, it indicates that the plug 300 and the socket 200 are loosened, and when the positioning element 112 enters the concave point b138, it indicates that the plug 300 and the socket 200 are locked, and when the positioning element 112 bounces into the concave point b138, the plate 101 contacts with the limiting plate 141, and when the positioning element 112 bounces into the concave point a137, the plate 101 contacts with the limiting post 133.

In this embodiment, be provided with convex hull 135 on the left side wall and the right side wall of head casing 130, swivel pin shaft 115 is located convex hull 135, and the plate body 101 back and the laminating of convex hull 135 of retaining member, convex hull 135 has the supporting role to plate body 101, furthermore, all be provided with support column 136 on the left side wall and the right side wall of head casing 130, support column 136 pushes up on the back of locking arm a102, thereby support column 136 also has a supporting role to plate body 101, thereby make plate body 101 non-deformable, in rotatory in-process, plate body 101 rotates in a plane all the time, thereby guarantee the reliability that locking assembly 100 used.

In this embodiment, the left housing 131 or/and the right housing 132 are each provided with a guiding and positioning block 140, further, the left housing 131 and the right housing 132 are each provided with a guiding and positioning block 140, preferably, the guiding and positioning block 140 is triangular, the top end of the guiding and positioning block 140 points to the socket 200, the left and right side walls of the upper housing 201 are each provided with a protrusion 205 corresponding to the guiding and positioning block 140, the protrusion 205 is provided with a guiding groove matched with the guiding and positioning block 140, and the upper end surface of the protrusion 205 is flush with the upper end surface of the upper housing 201, in the process of inserting, closing and locking the plug 300 and the socket 200, the guiding and positioning block 140 enters the guiding groove, thereby playing a role of guiding and positioning.

In this embodiment, the locking pin 204 is a stepped shaft structure, and the locking pin 204 is divided into three steps, the first step is a riveting surface, the second step is a sliding surface, and the third step has a limiting effect. An inner hole is formed in the first step, a chamfer is formed in the end face of the first step, the chamfer has the function of better entering when the locking nail 204 is installed in the round hole of the upper shell 201, and the chamfer plays a role in guiding entering; the outer diameter of the riveting surface of the locking nail 204 is larger than the inner diameter of the round hole of the upper shell 201, the locking nail 204 is in interference fit with the shell 201, and therefore the locking nail 204 is provided with an inner hole, so that the locking nail 204 has a shrinkage space on the riveting surface in the riveting process.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A rectangular connector, characterized by: the plug and the socket are plugged and locked through a locking assembly, the locking assembly comprises a locking part and a connecting part, the left side wall and the right side wall of a head shell of the plug are both provided with rotatable locking parts through rotating pin shafts, the two locking parts are connected through the connecting part, the connecting part is positioned above the head shell, the locking part comprises a plate body, the locking end of the plate body is provided with a locking arm a and a locking arm b, a gap is formed between the locking arm a and the locking arm b, one side, close to the locking arm b, of the locking arm a is provided with an arc a and an arc b, the arc a is positioned outside the arc b, the arc a and the arc b are connected smoothly, one side, close to the locking arm a, of the locking arm b is provided with an arc c, the tail of the gap is provided with a semicircular arc, and the arc b is connected with one end of the semicircular arc, and the arc b with the junction of semicircle forms high point A, the arc c with the other end of semicircle is connected, just the entry width in gap is more than or equal to the afterbody width in gap, the string of arc b is located the outside in gap, the string of arc c is located in the gap, all install the check pin on the left side wall and the right side wall of the seat casing of socket, work as the check pin enters into in the gap back, wrestling locking Assembly, the check pin is advanced to be gone into arc c, then moves to arc b's cambered surface along arc b's cambered surface on, then moves and crosses arc b's arc top along arc b's cambered surface, moves and crosses the high point along arc c's cambered surface again at last and enters into in the semicircle.

2. A rectangular connector according to claim 1, wherein: the middle of the plate body is provided with an elastic component, the plate body is further provided with a riveting hole, the rotating pin shaft penetrates through the riveting hole to be riveted with the head shell, the riveting hole is located between the elastic component and the locking arm a, the riveting hole, the elastic component and the semi-circular arc are distributed in a triangular mode, and the shortest distance from the riveting hole to the circular arc a is smaller than the shortest distance from the riveting hole to the circular arc b.

3. A rectangular connector according to claim 2, wherein: and a limiting column is arranged on the left side wall or/and the right side wall of the head shell and is positioned at the upper right part corresponding to the rotating pin shaft.

4. A rectangular connector according to claim 3, wherein: the elastic component comprises a positioning piece and an elastic arm, wherein the middle part of the plate body is provided with a through groove, the side wall of the through groove is provided with a notch, the elastic arm is arranged on the side wall of the through groove, the end part of the elastic arm is connected with the positioning piece, the elastic arm inclines towards the back of the plate body, the positioning piece protrudes out of the back of the plate body, when the front of the elastic arm is aligned with the front of the plate body, the positioning piece is positioned in the through groove, the left side wall and the right side wall of the head shell are respectively provided with a concave point a and a concave point b, the concave point a and the concave point b are distributed on a circumference which takes the axis of a rotating pin shaft as the circle center, the distance between the concave point a and the limiting column is smaller than the distance between the concave point b and the limiting column, and when the plug and the socket are plugged and locked, the positioning piece is positioned in the concave point b, when the plug and the socket are separated and loosened, the positioning piece is positioned in the concave point a.

5. A rectangular connector according to claim 1, wherein: convex hulls are arranged on the left side wall and the right side wall of the head shell, the rotating pin shaft is positioned on the convex hulls, and the back of the plate body of the locking piece is attached to the convex hulls.

6. A rectangular connector according to claim 1 or 5, wherein: and supporting columns are arranged on the left side wall and the right side wall of the head shell and are propped against the back surface of the locking arm a.

7. A rectangular connector according to claim 1, wherein: the plug includes first casing and first mounting panel, install the contact pin subassembly in the first mounting panel, left casing and right casing that the first casing set up including the symmetry, left side casing with right side casing is connected, just the first mounting panel is installed between left side casing and the right casing, just the top of right side casing is provided with the afterbody subassembly of solidus.

8. A rectangular connector according to claim 7, wherein: the socket includes seat mounting panel and seat casing, install the jack subassembly in the seat mounting panel, the seat casing includes casing and lower casing, all install on the lateral wall about going up the casing the check lock nail, the seat mounting panel is through last mounting panel and lower mounting panel centre gripping, just go up the casing and pass through bolt assembly locking with lower casing.

9. A rectangular connector according to claim 8, wherein: go up the casing and be rectangle square frame structure, just the bottom of going up the casing is provided with the ladder frame, the casing is rectangle square frame structure down, the bottom of casing is provided with the rectangle frame down, the seat mounting panel is the rectangle structure all be provided with the stopper in the outer fringe of seat mounting panel, the top of stopper is provided with L shape concave surface, the bottom of stopper is spacing step, the seat mounting panel quilt go up the mounting panel with down the mounting panel centre gripping after, the top of seat mounting panel is located in the upper casing, just L shape concave surface supports the bottom of ladder frame, the rectangle frame is passed to the bottom of seat mounting panel, just spacing step supports on the rectangle frame.

10. A rectangular connector according to claim 9, wherein: all be provided with the direction locating piece on left side casing or the right casing, all be provided with on the left and right sides lateral wall of last casing with the lug that the direction locating piece corresponds, set up the guide way with the direction locating piece matching on the lug, just the up end of lug with the up end of last casing flushes.